BEDS OF LIMESTONE. 319 



As the red sandrock thins out in Bridport, it is difficult to separate this limestone from 

 the Eolian limestones east of it, especially as all of them are more or less metamorphic. 

 But we feel assured that fifty or a hundred feet of the lowest of limestones are of this 

 group, lying directly upon slates. We will particularize the localities of what we refer 

 to this group: 



Southwest of Gr. Gale's house, on the direct road to Bridport, near Mr. Hamilton's house. 



On the road to Shoreham, near 0. Kitchel's house. The rock here is metamorphosed 

 into beautiful white limestone, which is manufactured into excellent lime. 



A short distance south of the preceding locality, there is a blue tough limestone of the 

 same group ; and a similar rock occurs at intervals along both roads, running south 

 towards Shoreham ; the one passing A. H. Rice's house ; the other by J. Barbour's both 

 in Bridport. 



Sparry limestone, in the north part of Shoreham, at a saw mill, west of A. Birchard's 

 house. 



At Shoreham village. 



Near the south line of Shoreham, on the direct road to Orwell. Most of the ledges on 

 this road are covered by Champlain clay ; the others are metamorphic limestone. 



There are several exposures of a limestone in Orwell Center, that we are inclined to 

 refer to this rock. It is calciferous, and is nearly horizontal. East of it a few rods, 

 there is slate, interstratified with limestone, holding fossils. Prof. Emmons considers 

 this limestone at Orwell village, the calciferous sandrock. 



A bed of limestone in the south part of Orwell, a little west of the middle of the south 

 line. 



A bed of bluish limestone, half a mile east of Benson Center. 



Another one in this vicinity is mentioned by Prof. Adams, and stated to contain fossils. 

 We have scarcely looked at this town, but doubt not that other beds of limestone are 

 common in the slate. 



In West Haven, Section VI. passes through at least three beds of this limestone, one 

 of which is just west of the Post Office, where the rock is compact, of a bluish-white color, 

 and is traversed by peculiar veins of calcite, appearing much like the segregated veins 

 of limestone that have never been melted. Another a mile east of the Post Office. 



The third bed is near Hubbardton River, and is more than a mile wide. 



These alternations of limestone and slate have been very puzzling to us, and we do not 

 feel fully satisfied that they all belong to this belt of limestone. We feel the least confi- 

 dence in the two last mentioned. But yet we do not see why they should not be regarded 

 as of nearly the same age, since it is a well known condition of things, that where two 

 rocks approach each other, the different beds alternate. These limestones are represented 

 on the map as distinct from the shales. 



The slates of this group universally lie to the west of the limestones just described. 

 Commencing at West Haven, there is a continuous belt, extending from Poultney River 

 east of the Trenton limestone and Utica slate (wherever the latter exists), north through 

 Benson. We crossed it at Benson Center, and found tolerably good quarries of roofing 

 slate in the northwest part of the town. A mile west of Martin's Pond, on the north 

 line of the town, and east of H. 0. Stacy's house, may perhaps be the eastern border of 



